Magneto igniting device for explosive-engines.



110.3%,534. PATBNTED DEO.31, 1907.I

H. DE LA VALETTE. MAGNETO" IGNITING DEVICE FOREXPLOSIVB ENGINES.

APPLICATION FILED SEPT. 7, 1905.

zzzgZ Mm 1 0 I UNITED STATES HENRI DE LA VALETTE, OF PARIS, FRANCE.

MAGNETO IGNITING DEVICE FOR EXPLGSIVE-ETTGINES.

Specification of Letters Iatent.

Iatented Dec. 31, 1907.

Application filed September 7.1905. Serial No. 277,423.

To all whom. it may concern:

Be it lmown-that'l, HENRI DE LA VALETTE, a citizen of the Republic ofFrance, residing at Paris, 111* Boulevard de Menihnontant, in theRepublic of France, engineer, have invented certain new and usefulImprove ments in Magneto Igniting Devices for Explosive-Engines, ofwhich the following is a specification,

This invention relates to magneto-igniting devices for explosiveengines, in which the whole of the magneto-igniting device can be swungaround its axis of rotation, in either direction according as theignition is to be forwarded or retarded. Such an arrangement avoidsany-complication in the operation of the revolving members and allows anadjustable forwarding by means of a very simple and compactconstruction, under the best conditions as to the utilization of themagnetic field;

In the accompanying drawing showing diagrams of one embodiment of thisinvention as applied to a high tension magnetoigniting device: Figure 1is a front view; Fig. 2 is a side elevation; and Fig. 3 is a verticalsection.

The movable frame, of the magneto-igniting device comprises two arms 1and 2, se cured on a base plate 3;)the pole pieces 4 are secured on thebase plate 3,, and the horseshoe shaped magnet 5 is secured to the polepieces l.

On thearms 1, 2 are formed lateral circular projections 6 and 7, whichrest in the bearings 8 and 9, integral with the fixed frame 10, in sucha manner as to enable the movable frame l the magneto-igniting de-. vicetogether with the connected parts to, swing around the axis of theprojections 6, 7, which l'rrm journals. The said projections are hollowand provide bearings for the loosely mounted shaft 11, carrying thearmature 113. One of the ends of theshaft 11 is provided with a pinion13 operated always in the same direction by the shaft of the engine, andthe other end of the shaft 11 carries a cam 14!, used to determineshort-circuitings .on the connect-ions of the magneto-igniting deviceand of a suitable transformer 27. The projection 6 is integral with aplate 15 located outside the fixed frame and on which are arranged thecont-act screw 16, the swinging lever 17 and the spring 18, which tendsto hold or maintain the lever in contact with the screw 16 The saidlever is actuated from the cam 14.

In the embodiment shown in the drawing, the magneto-igniting devicecarries distributor 19 to distribute the high tension currentssuccessively to four brushes 26 con nected to the igniters of a fourcylinder en gine. The said distributer is operated by a shaft 21,journaled in the arms 1, 2, and connected with the shaft 11 by pinions22 and 23.

The movable frame of the magneto-igniting devices can be set in diverspositions by means of a lever, or other similar device, attached to anarm projecting from the arm 1, and which can be oper ted by hand or anysuitabledevice, inconnection with the action of an opposing spring 25,attached to an arm 26, integral with the arm 1.

- When the armature revolves synchronously with the cam 14 and also withthe engine, it is the seat otinducted currents which are used in atransformer, which may be distinct or not from the inagneto-ignitingdevice, to produce transformed currents of high tension; the latter arebrought back to the transformer 27, which sends them sucof thecylinders. If the magneto-igniting device is caused to en ing a certainangle for wardly with respect to the direction of rotation of the shaft11, the lever 17 is moved in the same direction, so that it is actuatedlater on by the cam 14 and the igniting pf the engine is retarded to thesame extent. On thecontrary, by swinging the magnet -igniless advanced.As the inducting system tact 16 around the axis of the armature itfollows that the contact of these members and, consequently, theinterruption of the current in the primary mil 'ol the transfornier 27,always take place exactly at the magnetic field the most favorableposition as to induction.

The magnetodgniting device herein shown and described, designed toignite a four cycle four cylinder engine, is to give two sparks for eachrevolution of the driving shaft; the bipolar armature 12, nustconsequently, revolveat the same speedfas the drivityg shaft, and thecam 14 must coniprise two cam parts on the other hand, the

tion device backward, the igniting is more or moment when the armatureoccupies in thecessively and in suitable order to the igniters swingsbodily with the lever 17 and the con- I carrieil by the frame, and adistributor of induced. currents alsocarried by the said frame.

. distributer must revolve at half the speed of l the driving shaft, sothat the diameter of the l pinion 22 is double that of the pinion 23'.It will be understood, however, that these prol portions andarrangements may be varied according to the number of cylinders, thenumber of contacts on the distributer, the fitting; of the armature, andthe like. In the same manner, and without departing from the invention,the nature of the magnetoigniting device. the arrangement of its severalparts, their shape and the device for varying the position of themagnetodgniting around the axis of the armature, may be; modified; itwill also be understood that the lHVQlllliOl'i, while consisting mor"articular-1y in forwarding or in retarding the ignition by the rotationof the rnagnet-odgniting vice around plicable to dethe axis of itsarmature, is apall kinds of magneto-igniting devices whether of high orlow tension. i

Claims. 1. A magneto-electric machine, comprising an armature,oscillatingv field magnets,

an oscillating,distributer of induced currents, and means fhr mountingthe magnets and distributer, whereby they oscillate cooperatively 'onewith the other about the axis of the armature.

2. A magneto-electric machine, compris-l ing an armature, a framemounted to swing I about the ax s of the armature, amagnetl o. Amagnetoeiectric machine, cpmprising a revoluble armature, a framemounted l to swing, about the axis of the armature, a magnet carried bythe frame, a revoluble distributor of induced currents also carried bysaid frame, and means for revolving the distributor from the arn'iatureshaft.

4. A magneto-electric machine with a dis tributer of induced currentsfor the ignition of motors, comprising the combination of a fixed mainframe, a U-shaped frame journaled in the fixed frame, an armature jourlnaled in. the U-shaped frame, a field-magnet l fared on the base of thesaid U-shapod mova'ole frame, and a distributer ofanduced l as currentsmounted on the said movable frame.

T in a magneto-igniting device, a mam a field magnet on the base offrame, a U-shaped frame journaled in the main frame, an armaturejournaled in the Ushaped frame, a field-magnet on the base of the U-haped frame, a current distributor mounted in the Ushaped frame, andmeans for operating the distributor from the armature shaft.

6. In a ma neto-igniting device, a main frame, a U- Iiaped frame havinghollow trunnions and mounted in the main frame, afield-magnet on thebase of the U-shaped frame, an armature shaft mounted in the trunnionsof the U-sha ed frame, an armat-ure on said shaft, a s aft mounted inthe U-shaped frame, a current distributer on the shaft, andgearingbetween the said shaft and the armature shaft.

7. In a magneto-'gniting device, a main frame, trunnions and mounted inthe main frame,

the oscillating frame, an armature shaft mounted in the trunnions of theoscillating frame, an armature on the said shaft, a plate secured to onean oscillating frame having hollowof the trunnions of the oscillatingframe and provided with a contact, a pivoted and spring pressed contactlever on said plate, and a cam on the armature shaft for operat ing thesaid lever.

8. in a ma neto-igniting device, a main frame, a U-s aped frame havinghollow trunnions and mounted in the main frame, a field-magnet on thebase of the said U- shaped frame, an armature shaft mounted in thetrunnions ofthe said frame-an armature on the shaft, a plate on one ofthe tru11 nions of the U-shaped frame and having a contact, a pivotedandspring pressed contact lever on said plate,

a current distributor mounted in the U- shaped frame, and means foroperating the distributer from the armatureshaft and at less speed thanthe sa'id shaft.

In testimony, thati'I claim the foregoing as my invention, I have signedmy name in presence of'two subscribing witnesses.

. HENRI DE LA VALETTE.

Witnesses:

CAMILLE BLETRY, MAmuon Roux.

I a cam on the arms; I ture shaft for operating the contact lever,

